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/*******************************************************************************
* Copyright (c) 2014 Jeff Martin.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
*
* Contributors:
* Jeff Martin - initial API and implementation
******************************************************************************/
package cuchaz.enigma.bytecode;
import java.util.ArrayList;
import java.util.List;
import javassist.CtBehavior;
import javassist.CtClass;
import javassist.CtConstructor;
import javassist.CtMethod;
import javassist.bytecode.Descriptor;
import cuchaz.enigma.mapping.ArgumentEntry;
import cuchaz.enigma.mapping.BehaviorEntry;
import cuchaz.enigma.mapping.ClassEntry;
import cuchaz.enigma.mapping.ConstructorEntry;
import cuchaz.enigma.mapping.MethodEntry;
import cuchaz.enigma.mapping.Translator;
public class MethodParameterWriter {
private Translator m_translator;
public MethodParameterWriter(Translator translator) {
m_translator = translator;
}
public void writeMethodArguments(CtClass c) {
// Procyon will read method arguments from the "MethodParameters" attribute, so write those
ClassEntry classEntry = new ClassEntry(Descriptor.toJvmName(c.getName()));
for (CtBehavior behavior : c.getDeclaredBehaviors()) {
int numParams = Descriptor.numOfParameters(behavior.getMethodInfo().getDescriptor());
if (numParams <= 0) {
continue;
}
// get the behavior entry
BehaviorEntry behaviorEntry;
if (behavior instanceof CtMethod) {
behaviorEntry = new MethodEntry(classEntry, behavior.getMethodInfo().getName(), behavior.getSignature());
} else if (behavior instanceof CtConstructor) {
behaviorEntry = new ConstructorEntry(classEntry, behavior.getSignature());
} else {
throw new Error("Unsupported behavior type: " + behavior.getClass().getName());
}
// get the list of parameter names
List<String> names = new ArrayList<String>(numParams);
for (int i = 0; i < numParams; i++) {
names.add(m_translator.translate(new ArgumentEntry(behaviorEntry, i, "")));
}
// save the mappings to the class
MethodParametersAttribute.updateClass(behavior.getMethodInfo(), names);
}
}
}
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